Hedera™ Hashgraph SDK

This document is the primary reference for the Hedera™ Hashgraph SDKs.

This document is normative and should be taken as the official specification for semantic operation and classification of an Official Hedera™ Hashgraph SDK.

Reference

Core

• Client
• Status

---

• Transaction

---

• TransactionId
• TransactionReceipt
• TransactionRecord
• TransactionResponse

---

• Query
• TransactionReceiptQuery
• TransactionRecordQuery

Errors

• PrecheckStatus
• ReceiptStatus
• MaxQueryPaymentExceeded
• BadKey
• BadMnemonic
• BadMnemonicReason

Cryptography

• Key
• KeyList
• PrivateKey
• PublicKey
• Mnemonic

Cryptocurrency

• AccountId
• AccountInfo

---

• CryptoTransferTransaction
• AccountCreateTransaction
• AccountUpdateTransaction
• AccountDeleteTransaction

---

• AccountBalanceQuery
• AccountInfoQuery
• AccountRecordsQuery
• AccountStakersQuery

Smart Contract

• ContractId
• ContractInfo

---

• ContractCreateTransaction
• ContractUpdateTransaction
• ContractDeleteTransaction
• ContractExecuteTransaction
• ContractCreateFlow

---

• ContractBytecodeQuery
• ContractCallQuery
• ContractInfoQuery
• ContractRecordsQuery

File

• FileId
• FileInfo

---

• FileCreateTransaction
• FileAppendTransaction
• FileUpdateTransaction
• FileDeleteTransaction

---

• FileContentsQuery
• FileInfoQuery

Consensus Topic

• TopicId
• TopicInfo

---

• TopicCreateTransaction
• TopicUpdateTransaction
• TopicDeleteTransaction
• TopicMessageSubmitTransaction

---

• ConsensusTopicInfoQuery

System

• SystemDeleteTransaction
• SystemUndeleteTransaction
• FreezeTransaction

Network

• NetworkVersionQuery

Contributing

We welcome participation from all developers!

To propose a change to the specifications, submit a pull request making the change; or, open an issue for general discussion.

Please check out contributing guide to see how you can get involved.

Code of Conduct

This project is governed by the Contributor Covenant Code of Conduct. By participating, you are expected to uphold this code of conduct. Please report unacceptable behavior to [email protected].

License

Apache License 2.0